2520 series

HORIZONTAL SLIDING WINDOW

For those looking for the most affordable and practical sliding window, the 2520 Series is an excellent choice and particularly well suited for low-rise and garden apartments. The 2520 Series features slim sightlines and a thermally-improved frame and sash.

STANDARD FEATURES

  • ⅞” Insulated glass
  • OX / XO Configurations
  • Removable sash for easy cleaning and maintenance
  • Integral extruded pull rails on both sash
  • Spring loaded stainless steel keeper and high pressure zinc die cast sash lock
  • Adjustable rollers with stainless steel axles
  • Fiberglass mesh screens

OPTIONAL FEATURES

  • XX / OXO Configurations
  • Flanges (1 ½”, 2 ½”)
  • Head expander
  • Add-on nailing fin

OPTIONAL FEATURES

  • Receptor system
  • Trims

MODEL AAMA RATING STRUCTURAL LOAD (psf)TEST SIZE WIND SPEED (mph)AIR (cfm/ft²)WATER U-VALUE¹CR
2520C-507571" X 60"25 (1.6psf)<0.27.5 035 - 0.45
2525C-65 / CW-3597.571" X 60"25 (1.6psf)<0.210035 - 0.45

Performance data based on testing by AAMA Accredited Laboratory and NFRC Simulation software/or independent testing. Actual results will vary based on field conditions, locations, size/configurations or glazing options. Be sure to verify the performance requirements for your particular project. 1 U-Values will vary depending on the glazing selected. 2 Higher ratings available. Please contact Northern for more information. 3 Size and weight limitations apply when utilizing concealed hinges.

STANDARD FEATURES

  • ⅞” Insulated glass
  • OX / XO Configurations
  • Removable sash for easy cleaning and maintenance
  • Integral extruded pull rails on both sash
  • Spring loaded stainless steel keeper and high pressure zinc die cast sash lock
  • Adjustable rollers with stainless steel axles
  • Fiberglass mesh screens

OPTIONAL FEATURES

  • XX / OXO Configurations
  • Flanges (1 ½”, 2 ½”)
  • Head expander
  • Add-on nailing fin

OPTIONAL FEATURES

  • Receptor system
  • Trims

MODEL AAMA RATING STRUCTURAL LOAD (psf)TEST SIZE WIND SPEED (mph)AIR (cfm/ft²)WATER U-VALUE¹CR
2520C-507571" X 60"25 (1.6psf)<0.27.5 035 - 0.45
2525C-65 / CW-3597.571" X 60"25 (1.6psf)<0.210035 - 0.45

Performance data based on testing by AAMA Accredited Laboratory and NFRC Simulation software/or independent testing. Actual results will vary based on field conditions, locations, size/configurations or glazing options. Be sure to verify the performance requirements for your particular project. 1 U-Values will vary depending on the glazing selected. 2 Higher ratings available. Please contact Northern for more information. 3 Size and weight limitations apply when utilizing concealed hinges.